I used to rely on this on the old DEC systems, when editing and saving foo.dat;3 gave you foo.dat;4. It didn't save everything forever - and you could PURGE older versions - but it saved enough to get me out of trouble many times.
Dam' right (he says, still developing at 70). Getting older may be compulsory, but I regularly have to help the youngsters out with tech-related matters.
I got given a small Synology box by a brother-in-law, and have not been impressed by their OS or apps, so I just use rsync. It's OK, but as my needs are simple I'm thinking of using an RPi solution instead.
(What was amusing was that I kept finding it powered off, and spent quite a while trying to find why it could be shutting down. It turned out that, because I kept it on the floor under my desk, the Roomba would occasionally bump into it and hit the power button on the front)
The comparison with mechanical keyboards is spot on! Despite having nothing to do with radio or morse in any way, I was given a Vibroplex and it is quite a piece of kit - solid as a rock and obviously a tool well suited to its one task. It reminds me of some of the old tonearms used on turntables, with many springs, counterweights and possible adjustments.
I currently have three editors open: nvim (because I've been using it since it was vi), VS Code (because that's what work mandates) and Emacs (for org mode only). Horses for courses, and all that.
Years ago we found a large heron with a broken wing on the road outside our house in Wales. It had probably hit a power cable, and was hopping around dragging its wing. It was basically a homicidal needle beak, obviously not in the best of moods.
An elderly lady come out to see what the fuss was about, saw the bird, went back inside and then reappeared holding a block of polystyrene foam. She marched up to the bird, which very soon after found itself with a lump of foam on the end of its beak. That gave others the opportunity to wrap it in a blanket (bit big for a towel) and take it to the vet.
My wife does silverpoint. A couple of bucks worth of fine silver wire in an old mechanical pencil, and you're set for years of drawing. Pretty much the cheapest way to do art (and it looks good, too)
I used to get these two or three times a year, but then I had heart surgery last summer and had five in the first day after I came round from the anesthetic, and two or three every day for weeks after that. They've now settled down to one every few days. Annoying, but they go away fairly quickly and just leave me feeling a bit tired and headachy for a few hours.
I have several Indian coworkers who have a single name. Our company systems insist on first and last names, so they either end up with '.' as a last name, or the same name twice.